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Agentic AI's 'step change' poses systemic cyber risks – Breeden

Centralbanking • June 30, 2026

Agentic artificial intelligence has undergone a “step change” in capabilities that could threaten cyber resilience in the financial system, the Bank of England’s deputy governor for financial stability has said.

Speaking today (June 30) on a panel at the European Central Bank’s conference in the Portuguese resort of Sintra, Sarah Breeden said her “most proximate” financial stability concerns regarding AI related to this change in capability. Supervisors, she added, would need to adopt a system

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Bank of England Warns of Cyber Risks from Autonomous AI Systems On June 30, 2026, Sarah Breeden, Deputy Governor of the Bank of England, expressed concerns about the systemic cyber risks posed by agentic AI during a panel at the European Central Bank Forum in Portugal. She identified autonomous AI agents as a significant threat to financial stability, particularly during periods of market stress. Breeden emphasized that existing regulatory frameworks may not be adequate to manage the behavior of these AI systems, which can operate without human intervention. This raises critical questions about the ability of the financial system to monitor and control autonomous actions effectively. The Bank of England is advocating for more sophisticated governance and accountability frameworks to address these emerging challenges. 2 sources 49

Agentic AI's 'step change' poses systemic cyber risks – Breeden

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